#!/usr/bin/make -f
# debian/rules for the Debian mesa package
# Copyright © 2006 Thierry Reding <thierry@gilfi.de>

# Uncomment this to turn on verbose mode.
#export DH_VERBOSE=1

include /usr/share/dpkg/pkg-info.mk

DEB_HOST_MULTIARCH ?= $(shell dpkg-architecture -qDEB_HOST_MULTIARCH)
DEB_HOST_ARCH      ?= $(shell dpkg-architecture -qDEB_HOST_ARCH)
DEB_HOST_ARCH_OS   ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_OS)
DEB_HOST_ARCH_CPU  ?= $(shell dpkg-architecture -qDEB_HOST_ARCH_CPU)

# for finding the correct llvm-config when meson doesn't know about it yet
export PATH:=/usr/lib/llvm-15/bin/:$(PATH)

export DEB_BUILD_MAINT_OPTIONS=optimize=-lto

ifeq (,$(filter $(DEB_HOST_ARCH), armhf ppc64el sh3 sh4))
buildflags = \
	$(shell DEB_CFLAGS_MAINT_APPEND=-Wall DEB_CXXFLAGS_MAINT_APPEND=-Wall dpkg-buildflags --export=configure)
else
  ifneq (,$(filter $(DEB_HOST_ARCH), armhf))
  # Workaround for a variant of LP: #725126
  buildflags = \
	$(shell DEB_CFLAGS_MAINT_APPEND="-Wall -fno-optimize-sibling-calls" DEB_CXXFLAGS_MAINT_APPEND="-Wall -fno-optimize-sibling-calls" dpkg-buildflags --export=configure)
  else
    ifneq (,$(filter $(DEB_HOST_ARCH), ppc64el))
    # Workaround for https://gitlab.freedesktop.org/mesa/mesa/-/issues/5315
    buildflags = \
	$(shell DEB_CFLAGS_MAINT_APPEND="-Wall -O2" DEB_CXXFLAGS_MAINT_APPEND="-Wall -O2" dpkg-buildflags --export=configure)
    else
    # Workaround for https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83143
    buildflags = \
	$(shell DEB_CFLAGS_MAINT_APPEND="-Wall -O1" DEB_CXXFLAGS_MAINT_APPEND="-Wall -O1" dpkg-buildflags --export=configure)
    endif
  endif
endif

EGL_PLATFORMS = x11
GALLIUM_DRIVERS = swrast
VULKAN_DRIVERS = swrast
VULKAN_LAYERS =

confflags_DRI3 = -Ddri3=disabled
confflags_OSMESA =  -Dosmesa=true
confflags_SSE2 = -Dsse2=true

# hurd doesn't do direct rendering
ifeq ($(DEB_HOST_ARCH_OS), hurd)
	confflags_DIRECT_RENDERING = -Dglx-direct=false
	confflags_GBM = -Dgbm=disabled
else
	GALLIUM_DRIVERS += r300 r600 asahi kmsro

	confflags_DIRECT_RENDERING = -Dglx-direct=true
	confflags_GBM = -Dgbm=enabled
	confflags_GALLIUM += -Dgallium-extra-hud=true
	confflags_GALLIUM += -Dgallium-vdpau=enabled
	confflags_GALLIUM += -Dlmsensors=enabled

  # radv/lavapipe needs LLVM and the Vulkan loader, so only build on the subset of
  # arches where we have LLVM enabled and where the Vulkan loader is built.
  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 armel armhf i386 mips64el mipsel powerpc ppc64 ppc64el s390x sparc64))
	VULKAN_DRIVERS += amd swrast
  endif

  # Only enable amd on riscv64, swrast needs CPU JIT support which doesn't work properly yet
  ifneq (,$(filter $(DEB_HOST_ARCH), riscv64))
	VULKAN_DRIVERS += amd
	confflags_GALLIUM += -Ddraw-use-llvm=false
  endif

  ifeq ($(DEB_HOST_ARCH_OS), linux)
	confflags_DRI3 = -Ddri3=enabled
	# Gallium drivers which require kernel support, not yet ported to non-Linux
	GALLIUM_DRIVERS += nouveau virgl

	# Freedreno requires arm in addition
	# ifneq (,$(filter arm arm64,$(DEB_HOST_ARCH_CPU)))
	# 	GALLIUM_DRIVERS += freedreno
	# endif

	# etnaviv, tegra, vc4 and v3d kernel support are only available on armhf and arm64
	ifneq (,$(filter $(DEB_HOST_ARCH), armhf arm64))
		GALLIUM_DRIVERS += etnaviv panfrost svga tegra vc4 v3d
		VULKAN_DRIVERS += broadcom
	endif

	ifneq (,$(filter $(DEB_HOST_ARCH), armhf arm64 riscv64))
		GALLIUM_DRIVERS += lima
	endif

	ifneq (,$(filter $(DEB_HOST_ARCH), amd64 i386 x32))
		GALLIUM_DRIVERS += svga
		# svga needs xa state tracker
		confflags_GALLIUM += -Dgallium-xa=enabled
		VULKAN_DRIVERS += intel
	endif

	# Non-Linux ports lack epoll, so wayland isn't ready yet:
	# https://gitlab.freedesktop.org/wayland/wayland/-/issues/72
	# hurd also lacks *_CLOEXEC
	EGL_PLATFORMS += ,wayland

	ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 armhf i386 mips64el mipsel powerpc ppc64 ppc64el s390x))
		confflags_VALGRIND += -Dvalgrind=enabled -Dandroid-libbacktrace=disabled
	endif

	# WSL supports only amd64 and arm64
	ifneq (,$(filter amd64 arm64,$(DEB_HOST_ARCH)))
		GALLIUM_DRIVERS += d3d12
	endif
  endif

  # Build intel drivers on archs where libdrm-intel is installed
  ifneq (,$(filter $(DEB_HOST_ARCH),amd64 i386 kfreebsd-amd64 kfreebsd-i386 x32))
	GALLIUM_DRIVERS += iris crocus
  endif

  # LLVM is required for building r300g, radeonsi and llvmpipe drivers.
  # It's also required for building OpenCL support.
  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 armel armhf i386 mips64el mipsel powerpc ppc64 ppc64el riscv64 s390x sparc64))
	GALLIUM_DRIVERS += radeonsi
	confflags_GALLIUM += -Dllvm=enabled
	confflags_GALLIUM += -Dgallium-opencl=disabled
	confflags_GALLIUM += -Dgallium-rusticl=false

	# nine makes sense only on archs that build wine
	ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 armel armhf i386 powerpc))
		confflags_GALLIUM += -Dgallium-nine=true
	endif
  else
	confflags_GALLIUM += -Dllvm=disabled
  endif

  # build vulkan layers where Vulkan loader is available
  ifneq (,$(filter $(DEB_HOST_ARCH), amd64 arm64 armel armhf i386 mips64el mipsel powerpc ppc64 ppc64el riscv64 s390x sparc64 x32))
	GALLIUM_DRIVERS += zink
	VULKAN_LAYERS += device-select intel-nullhw overlay
  endif

  ifeq (,$(filter pkg.mesa.nolibva,$(DEB_BUILD_PROFILES)))
	confflags_GALLIUM += -Dgallium-va=enabled
	confflags_GALLIUM += -Dvideo-codecs="vc1dec, h264dec, h264enc, h265dec, h265enc"
  endif
endif

ifeq ($(DEB_HOST_ARCH), i386)
	confflags_SSE2 = -Dsse2=false
endif

empty:=
space := $(empty) $(empty)
comma := ,
GALLIUM_DRIVERS := $(patsubst %,'%',$(GALLIUM_DRIVERS))
GALLIUM_DRIVERS_LIST := $(subst $(space),$(comma),$(GALLIUM_DRIVERS))
VULKAN_DRIVERS := $(patsubst %,'%',$(VULKAN_DRIVERS))
VULKAN_DRIVERS_LIST := $(subst $(space),$(comma),$(VULKAN_DRIVERS))
VULKAN_LAYERS := $(patsubst %,'%',$(VULKAN_LAYERS))
VULKAN_LAYERS_LIST := $(subst $(space),$(comma),$(VULKAN_LAYERS))

confflags_EGL = -Dplatforms="$(EGL_PLATFORMS)"
confflags_GLES = -Dgles1=disabled -Dgles2=enabled
confflags_GALLIUM += -Dgallium-drivers="[$(GALLIUM_DRIVERS_LIST)]"

confflags += \
	-Ddri-drivers-path=/usr/lib/$(DEB_HOST_MULTIARCH)/dri \
	-Ddri-search-path='/usr/lib/$(DEB_HOST_MULTIARCH)/dri:\$$$${ORIGIN}/dri:/usr/lib/dri' \
	-Dvulkan-drivers="[$(VULKAN_DRIVERS_LIST)]" \
	-Dvulkan-layers="[$(VULKAN_LAYERS_LIST)]" \
	-Dglvnd=true \
	-Dshared-glapi=enabled \
	-Dgallium-omx=disabled \
	-Db_ndebug=true \
	-Dbuild-tests=true \
        -Dlibunwind=disabled \
        -Degl=enabled \
        -Dgallium-va=disabled \
        -Dgallium-vdpau=disabled \
        -Dgallium-xa=disabled \
        -Dglx=dri \
        -Dmicrosoft-clc=disabled \
	$(confflags_DIRECT_RENDERING) \
	$(confflags_GBM) \
	$(confflags_DRI3) \
	$(confflags_EGL) \
	$(confflags_GALLIUM) \
	$(confflags_GLES) \
	$(confflags_OSMESA) \
	$(confflags_SSE2) \
	$(confflags_VALGRIND)

override_dh_clean:
	rm -rf .pc
	rm -rf build
	rm -rf configure bin/config.guess bin/config.sub config.h.in
	rm -rf $$(find -name Makefile.in)
	rm -rf bin/install-sh bin/ltmain.sh
	for file in debian/*.in; do rm -f $${file%%.in}; done
	find -name '*.pyc' -delete
	find -name '__pycache__' -delete
	dh_clean

override_dh_auto_configure:
	$(buildflags) dh_auto_configure -- \
		$(confflags)

override_dh_auto_install:
	dh_auto_install
	for file in debian/*.in; \
	do \
		sed -e"s,\$${DEB_HOST_MULTIARCH},$(DEB_HOST_MULTIARCH),g" \
			$${file} > $${file%%.in}; \
	done

# some tests are expected to fail for now, drop this when upstream has
# better cross-build testing in place and expected failures fixed
override_dh_auto_test:
	-dh_auto_test

allpkg = $(shell dh_listpackages -a)

override_dh_installchangelogs:
	dh_installchangelogs -a
	dh_installchangelogs -pmesa-common-dev

override_dh_install:
	# purge .la files
	find debian/tmp/ -name '*.la' -exec rm '{}' ';'

	# Get rid of some files which aren't installed. Do not
	# use -f to ensure we notice disappearing files:
	rm debian/tmp/usr/lib/*/libglapi.so
	rm debian/tmp/usr/lib/*/libEGL_mesa.so
	rm debian/tmp/usr/lib/*/libGLX_mesa.so

	# Copy the hardlinked *_dri.so correctly.
	install -m755 -d debian/libgl1-mesa-dri/usr/lib/${DEB_HOST_MULTIARCH}/dri/
	mv debian/tmp/usr/lib/${DEB_HOST_MULTIARCH}/dri/*_dri.so \
	   debian/libgl1-mesa-dri/usr/lib/${DEB_HOST_MULTIARCH}/dri/

  ifneq ($(DEB_HOST_ARCH_OS), hurd)
	# Copy the hardlinked vdpau drivers correctly.
	install -m755 -d debian/mesa-vdpau-drivers/usr/lib/${DEB_HOST_MULTIARCH}/vdpau/
	mv debian/tmp/usr/lib/${DEB_HOST_MULTIARCH}/vdpau/libvdpau*.so* \
	   debian/mesa-vdpau-drivers/usr/lib/${DEB_HOST_MULTIARCH}/vdpau/

    ifeq (,$(filter pkg.mesa.nolibva,$(DEB_BUILD_PROFILES)))
	# Copy the hardlinked va drivers correctly.
	install -m755 -d debian/mesa-va-drivers/usr/lib/${DEB_HOST_MULTIARCH}/dri/
	mv debian/tmp/usr/lib/${DEB_HOST_MULTIARCH}/dri/*_drv_video.so \
	   debian/mesa-va-drivers/usr/lib/${DEB_HOST_MULTIARCH}/dri/
    endif
  endif

	dh_install -a

	# Install bug control and script:
	set -e; for p in $(allpkg); do \
		install -d debian/$$p/usr/share/bug/$$p && \
		install -m 644 debian/local/control debian/$$p/usr/share/bug/$$p && \
		install -m 755 debian/local/script  debian/$$p/usr/share/bug/$$p; \
	done

override_dh_missing:
	dh_missing --fail-missing

override_dh_makeshlibs:
	dh_makeshlibs -a -- -c4

%:
	dh $@ --with quilt \
		--builddirectory=build/ \
		--buildsystem=meson

# For maintainer use only, generate a tarball:
gentarball:
	git archive --format=tar upstream-experimental --prefix=$(DEB_SOURCE)-$(DEB_VERSION_UPSTREAM)/ \
		| gzip -9 > ../$(DEB_SOURCE)_$(DEB_VERSION_UPSTREAM).orig.tar.gz
